CN107356857A - Minimum widith is the quick determination method of 1mil PCB mini-pads functional defects - Google Patents
Minimum widith is the quick determination method of 1mil PCB mini-pads functional defects Download PDFInfo
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- CN107356857A CN107356857A CN201710367000.9A CN201710367000A CN107356857A CN 107356857 A CN107356857 A CN 107356857A CN 201710367000 A CN201710367000 A CN 201710367000A CN 107356857 A CN107356857 A CN 107356857A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/06711—Probe needles; Cantilever beams; "Bump" contacts; Replaceable probe pins
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/281—Specific types of tests or tests for a specific type of fault, e.g. thermal mapping, shorts testing
- G01R31/2812—Checking for open circuits or shorts, e.g. solder bridges; Testing conductivity, resistivity or impedance
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Abstract
The invention discloses the quick determination method that the PCB mini-pads that a kind of minimum widith is 1mil open the functional defects such as short circuit, comprise the following steps：Plant a generation test file automatically first with engineering software, then local directed complete set is carried out to the test position of mini-pads in test file by hand according to the shape of pad and generates test file；High-precision flying probe tester of the selection with screw mandrel kinematic system, selects optimal flying probe tester；Change miniature testing tool and carry out accuracy correction, the conventional blade type testing needle on flying probe tester is replaced by microneedle, the microneedle is the special needle-like testing needle of mini-pads；Mini-pads contraposition design, selecting mini-pads, the method directly aligned using mini-pads center is aligned as loci；Test machine operational factor is set.Width of the present invention is that the quick determination method that 1mil mini-pads open circuit defect has the advantages that workable, production difficulty is low, efficiency high and quality are secure.
Description
Technical field
The present invention relates to printed circuit board pad width：1mil ＜ PAD Size ＜ 4mil chip-scale microminiature pad
Open circuit and short-circuit function detection field, specially a kind of pad width is that 1-4mil mini-pads open the fast of circuit defect
Fast detection method.
Background technology
Go to detect the conduction property of base plate line using physical contact of the probe with printed circuit board conductive welding disk is tested
(Continuity) and insulating properties (Isolation) are to examine the conventional scheme of PCB substrate electrical performance characteristics.
The bridge that PCB substrate is transmitted as signal, with the arrival in 5G epoch, the intelligence equipment based on mobile communication
Integrated chip has entered the chip encapsulation technology epoch of 10nm levels from surface mount.The pad size in BGA/IC regions is because of encapsulation
Space needs also less and less（Regular width requirement >=6mil, minimum >=4mil）, now IC positions in part, which encapsulate, has reached 1-4 mil
Limit capacity.To ensure the short-circuit electric property of opening of PCB substrate, PCB factories must be to all welderings of PCB substrate before shipment
The network structure of point carries out electrical measurement, technical capability, detection method of the mini-pads to PCB factories detection device less than 4 mil
Propose higher requirement.
As PAD Size >=6mil, the test of general or Combined tool is adopted；As PAD Size >=4mil, small lot order
Using flying probe, high-volume order can only use one kind by special conductive materials PCR（Pressure sensitive
Conductive Rubber）And the conductive rubber tool test that PTB (PitchTranslation Board) makes, part factory
The Micro-probe tool production that business is also automatically aligned using CCD, but the testing cost of latter two production model is fairly expensive, it is medium and small
PCB factories are particularly various a small amount of model enterprise and can not undertaken；As PAD Size ＜ 4mil and >=1mil, exceed with
The limit capacity of upper test equipment.For such order, the side of PCB factories generally use AOI sweep circuits+outer layer Manual Visual Inspection
Method shipment, the not only low unsuitable volume production of the slow efficiency of detection speed, because human eye can not find the potential function between internal layer or hole
Property defect, therefore the serious risk opened short circuit leakage and face huge claim be present.Due to pcb board in process of production due to by
1-2mil accuracy error be present, lead in the combined influence of many factors such as sheet material, the harmomegathus of the film, etching, test equipment itself
Cause pad center test position there are 1-2mil normal excursions, make flying needle machine efficiency when test is less than 4mil miniature position pad low
Or it can not test.
The content of the invention
The invention provides a kind of pad workable, that production difficulty is low, efficiency high and quality are secure is minimum wide
The mini-pads spent for 1mil open the quick determination method of circuit defect.
The present invention by from the data make of flying needle machine, equipment precision adjustment, test tool selection, alignment mode selection, survey
Examination program optimization etc. is studied the electric performance test technology of flying needle machine, eliminates accuracy error, and searching utilizes flying needle machine
Removable dynamic characteristic test ＜ 4MIL mini-pads preferred plan.It is close with internet+and the deep propulsion of industry 4.0
And the order of small PCB mini-pads substrates must be following order sustainable growth main battle ground, market in urgent need one kind can be automatically fast
Speed detecting PCB substrate mini-pads defect method, come ensure production firm largely access this kind of order after quality requirements.
Specifically, the present invention can be achieved through the following technical solutions：
Minimum widith is that 1mil mini-pads open the quick determination method of circuit defect, is comprised the following steps：
The making of the first step, test file, plant a generation test file, then the shape according to pad automatically first with engineering software
Shape carries out local directed complete set to the test position of mini-pads in test file by hand and generates test file；
The selection of second step, test machine, high-precision flying probe tester of the selection with screw mandrel kinematic system, is detected with test board and flown
The CPK accuracy test values of pin test machine, the CPK accuracy tests value detected is contrasted with the CPK accuracy values being calculated,
Optimal flying probe tester is selected, then the ball screw accuracy of flying probe tester is corrected greatly again using system software, i.e., to flying
Pin test machine carries out second-order correction, flying probe tester XY displacement accuracies is reached optimum state；
3rd step, change miniature testing tool and carry out accuracy correction, the conventional blade type testing needle on flying probe tester is changed
For microneedle, the microneedle is the special needle-like testing needle of mini-pads, after replacing, using correcting plate on flying probe tester
Microneedle makees small correction to the precision of needle point, it is ensured that the precision of the microneedle tip alignment after installation reaches optimum state；
4th step, mini-pads contraposition design, select mini-pads directly to be aligned using mini-pads center as loci
Method aligns, and the method contraposition that mini-pads contraposition design is directly aligned using mini-pads center in plate, effectively reduces harmomegathus
And influence to aligning accuracy is etched, improve the aligning accuracy of plate in kind and data coordinate, and specifically, it is preferable to which tip diameter is less than
The cooperation of the microneedle and translational speed of pad width, maximumlly reduce because plank, film harmomegathus, manufacture craft deviation are led
The pad precision of cause changes the influence to measuring accuracy and efficiency, is the automation rapid batch production wound of chip-scale mini-pads
Condition is made；
5th step, test machine operational factor are set, and test machine operational factor is configured, and adjust displacement accuracy, make it is front-seat or
It will not be collided in test process between 2 microneedles of heel row.
The mini-pads that minimum widith is 1mil in the present invention are opened to be transported in the quick determination method of circuit defect with screw mandrel
The selection of the high-precision flying probe tester of dynamic system, it may move using flying probe tester probe, the characteristic that test speed is controllable, most
Optimization design pad width is microneedle, kind pin position and the contraposition scheme of 1-4mil micro chip level mini-pads plate, and
It is engaged with translational speed and maximumlly reduces influence of the harmomegathus to testing efficiency and precision, it is ensured that microneedle can be effectively to width
The electric property for spending the miniature position pad of micro chip level for 1-4mil is detected, and can realize the rapid automatized batch life of machine
The method that production replaces traditional AOI scannings+Manual Visual Inspection, i.e. lifting testing efficiency reduce mini-pads product and open short-circuit function again
Property defect leakage detection method.The detection method plants a generation test file first with engineering software automatically, then according to pad
Shape by hand in test file miniature position pad test position carry out local directed complete set generation test file, then select band
There is the high-precision flying probe tester of screw mandrel kinematic system, utilize the characteristic that flying probe tester is removable and test speed is controllable, knot
Close microneedle and kind pin position and the contraposition design of miniature position pad, its whole detection process realize that flying probe tester is fast automatic
Change batch production, the method that instead of traditional AOI scannings and Manual Visual Inspection, its is workable, production difficulty is low, efficiency high
And quality is secure.
Further, in the above-mentioned first step test file making, comprise the following steps that：
Test file is made according to flying probe tester parameter request, round or special-shaped pad test point design is in center, bar
Shape pad is staggered at both ends, and chip-scale minitype plate test file title is indicated on traveler.
Further, the special needle-like testing needle of mini-pads is tapered aciculiform shape in above-mentioned 3rd step, including syringe needle and pin
Seat, the syringe needle is upper coarse and lower fine pyramid type syringe needle, and the syringe needle and needle stand are by injection molding and are fixed on needle stand end
In integrative-structure, the extension elongation that the syringe needle stretches out hub portion is 3mm, and the tip diameter of the syringe needle is less than 2mil, institute
Syringe needle afterbody is stated to be connected to form path with the signal conductor of flying probe tester test circuit by way of welding metal line,
The molded portion of the needle stand is provided with the fixing hole for being used for being arranged on needle stand on flying probe tester, and the needle stand passes through fixing hole
Micro chip level microneedle is arranged on flying probe tester.In upper coarse and lower fine conical microneedle, syringe needle stretches out needle stand portion
Point 3mm, tip diameter are less than 2mil, and the syringe needle and needle stand are by injection molding and to be fixed on needle stand end be in integrative-structure,
The injection thin slice mechanism of needle stand has good elasticity, ensure that testing needle does not stab the safety that testing weld pad protects pin again,
Make pyramid type testing needle overall performance stable, effectively ensure that test is more accurate.
Further, the small correction structure of the big correction of above-mentioned second step and the ball screw accuracy in the 3rd step and microneedle needle point
Into the accuracy correction of flying probe tester, accuracy correction includes the screw mandrel XY axial displacement accuracy corrections of flying probe tester, and microneedle
Needle point accuracy correction, the screw mandrel XY axial displacements accuracy correction is big correction, the precision school provided using flying probe tester manufacturer
Positive plate and correction program are corrected by operator, and the microneedle needle point accuracy correction is small correction, uses flying probe tester
The defects of manufacturer provides correcting plate, does needle point correction to the microneedle after replacing successively.
Further, the correction time of the big correction is about 20 minutes, and the correction time of the small correction is about 5 points
Clock.
Further, in above-mentioned 4th step in mini-pads contraposition design procedure, when every sheet has multiple mini-pads areas
During domain, the summit of preferred plate angle corresponding unit mini-pads aligns as loci；In test process find because plank, the film,
When the harmomegathus such as drilling cause the off normal vacation to open, by each shipment unit separately test file processed, and according to micro- in above-mentioned 4th step
Type pad design carries out separating contraposition.
Further, to the design of detection translational speed during test machine operational factor is set in above-mentioned 5th step, when miniature
When position pad width is more than or equal to 3mil, middling speed is selected；When miniature position pad width is less than 3mil, low speed is selected.
Minimum widith of the present invention is that 1mil mini-pads open the quick determination method of circuit defect, has as follows beneficial
Effect：It is workable, production difficulty is low, efficiency high and quality are secure.
Firstth, testing efficiency is high, and the present invention utilizes flying needle from the high-precision flying probe tester with screw mandrel kinematic system
The moveable characteristic of test machine, traditional AOI scannings+Manual Visual Inspection is replaced to move the rapid automatized production technology of flying probe tester
Technology, meet the needs that enterprise produces in enormous quantities, effectively lift testing efficiency；
Secondth, quality is secure, the present invention with move the rapid automatized production technology of flying probe tester instead of traditional AOI scanning+
Manual Visual Inspection technology, the printed board leakage that effectively prevent out short-circuit function defect arrive client, cause production firm face
Face 1:More than 10 huge claim risk, for enterprise, the quick production of automation provides technical guarantee on a large scale；
3rd, workable, production difficulty is low, and quick determination method of the present invention is relative to traditional AOI scannings+Manual Visual Inspection
Technical scheme, it effectively reduces the production difficulty of product, quick determination method of the present invention, planted automatically a little first with engineering software
Test file is generated, reselection carries the high-precision flying probe tester of screw mandrel motion, and after selecting test machine, conventional blade type is tested
Pin is replaced by the special needle-like testing needle of mini-pads, then miniature position pad is carried out to test loci setting, is finally configured
The operational factor of flying probe tester, it is workable.
Embodiment
In order that those skilled in the art will better understand the technical solution of the present invention, with reference to example to the present invention
Product is described in further detail.
Minimum widith is that 1mil PCB mini-pads open the quick determination method of circuit defect, is comprised the following steps：
The making of the first step, test file, plant a generation test file, then the shape according to pad automatically first with engineering software
Shape carries out local directed complete set to the test position of miniature position pad in test file by hand and generates test file, specifically, according to
Flying probe tester parameter request makes test file, and round or special-shaped pad test point design exists in center, bar shaped pad
Both ends are staggered, and the width of mini-pads test file title and mini-pads is indicated on traveler；
The selection of second step, test machine, high-precision flying probe tester of the selection with screw mandrel kinematic system, is detected with test board and flown
The CPK accuracy test values of pin test machine, the CPK accuracy tests value detected is contrasted with the CPK accuracy values being calculated,
Optimal flying probe tester is selected, then the ball screw accuracy of flying probe tester is corrected greatly again using system software, i.e., to flying
Pin test machine carries out second-order correction, the XY displacement accuracies of flying probe tester kinematic system is reached optimum state；
3rd step, change miniature testing tool and carry out accuracy correction, the conventional blade type testing needle on flying probe tester is changed
For microneedle, the microneedle is the special needle-like testing needle of mini-pads, after replacing, using correcting plate on flying probe tester
Microneedle makees small correction to the precision of needle point, it is ensured that the precision of the microneedle tip alignment after installation reaches optimum state；
4th step, mini-pads contraposition design, select mini-pads directly to be aligned using mini-pads center as loci
Method aligns, and the method contraposition that mini-pads contraposition design is directly aligned using mini-pads center in plate, effectively reduces harmomegathus
And influence to aligning accuracy is etched, improve the aligning accuracy of plate in kind and data coordinate, and specifically, it is preferable to which tip diameter is less than
The cooperation of the microneedle and translational speed of pad width, maximumlly reduce because plank, film harmomegathus, manufacture craft deviation are led
The pad precision of cause changes the influence to measuring accuracy and efficiency, is that the automation rapid batch of micro chip level mini-pads is given birth to
Production creates condition；
5th step, test machine operational factor are set, and test machine operational factor is configured, and adjust displacement accuracy, make it is front-seat or
It will not be collided in test process between 2 microneedles of heel row, adjustment test machine operational factor moves in setting to detection
The design of speed, when miniature position pad width is more than or equal to 3mil, select middling speed；When miniature position pad width is less than 3mil
When, low speed is selected, and to time suitable time-delay of having an acupuncture treatment, opened to reduce vacation.
The mini-pads that minimum widith of the present invention is 1mil are opened to move in the quick determination method of circuit defect with screw mandrel
The selection of the high-precision flying probe tester of system, it is optimal using the characteristic that flying probe tester probe is removable, test speed is controllable
Change the microneedle for the micro chip level mini-pads plate that design pad width is 1-4mil, plant pin position and contraposition scheme, and with
Translational speed, which is engaged, maximumlly reduces influence of the harmomegathus to testing efficiency and precision, it is ensured that microneedle can be effectively to width
Electric property for 1-4mil micro chip level mini-pads is detected, and can realize machine rapid automatized batch production generation
For the method for traditional AOI scannings+Manual Visual Inspection, i.e. lifting testing efficiency reduces minitype plate and opens the leakage of short-circuit function defect again
Detection method.The detection method plants a generation test file first with engineering software automatically, then manual according to the shape of pad
Local directed complete set generation test file is carried out to the test position of miniature position pad in test file, then selection is moved with screw mandrel
The high-precision flying probe tester of system, using the characteristic that flying probe tester is removable and test speed is controllable, with reference to microneedle and
Kind pin position and mini-pads contraposition design, its whole detection process realize the rapid automatized batch production of flying probe tester,
The method that instead of traditional AOI scannings and Manual Visual Inspection, its is workable, production difficulty is low, efficiency high and quality have
Ensure.
Further, the special needle-like testing needle of mini-pads is tapered aciculiform shape in above-mentioned 3rd step, including syringe needle and pin
Seat, the syringe needle is upper coarse and lower fine pyramid type syringe needle, and the syringe needle and needle stand are by injection molding and are fixed on needle stand end
In integrative-structure, the extension elongation that the syringe needle stretches out hub portion is 3mm, and the tip diameter of the syringe needle is less than 2mil, institute
Syringe needle afterbody is stated to be connected to form path with the signal conductor of flying probe tester test circuit by way of welding metal line,
The molded portion of the needle stand is provided with the fixing hole for being used for being arranged on needle stand on flying probe tester, and the needle stand passes through fixing hole
Miniature needle stand is arranged on flying probe tester.The syringe needle of conventional blade type testing needle is in laminar blade type, in order to ensure that blade exists
Stability in moving process, the width of blade are generally configured to 2mm~3mm, and length is 5 mm or so, and the thickness of new knife is big
In 4 mil, when pad of the test less than its diameter, knife-edge forms hanging shape along the welding resistance that can touch surrounding with tested pad
State test crash.With the increase of testing time, tip dimensions also increase therewith, therefore can only test more than 4mil pad.
Stretched in the present invention using upper coarse and lower fine pyramid type testing needle as microneedle, its upper coarse and lower fine conical microneedle, syringe needle
Go out hub portion 3mm, tip diameter is less than 2mil, and the syringe needle and needle stand are by injection molding and are fixed on needle stand end in one
Body structure, the molded portion of needle stand set the fixing hole of diverse location according to the type of flying needle machine, by fixing hole by miniature weldering
Disk test prod special is arranged on flying probe tester, ensures that syringe needle has good connect for the miniature testing needle of needle-like with PCB pads
Touch, and the injection thin slice mechanism of needle stand has good elasticity, ensure that testing needle does not stab testing weld pad and protects pin again
Safety, while upper coarse and lower fine pyramid type testing needle effectively ensure that stability of the testing needle in test process, i.e. circular cone
Type testing needle overall performance is stable.It can increase testing needle side from the mini-pads test prod special smaller than mini-pads width
The problem of safe distance that edge contacts with welding resistance around, improvement and hanging tested pad, needle point is allowed firmly, closely to be connect with pad
Touch, it is ensured that test passes through.Specifically, the selection of needle-like is in use, first measuring the size of needle point and being classified by size
Place, according to the width of the pad on traveler, preferably tip diameter is less than 2 mil microneedle, when the needle point of microneedle is straight
When footpath is more than or equal to 4 mil, only it is used as production conventional plate, or the qualified rear production minitype plate of polishing.
Further, the small correction structure of the big correction of above-mentioned second step and the ball screw accuracy in the 3rd step and microneedle needle point
Into the accuracy correction of flying probe tester, accuracy correction includes the screw mandrel XY axial displacement accuracy corrections of flying probe tester, and microneedle
Needle point accuracy correction, the screw mandrel XY axial displacements accuracy correction is big correction, the precision school provided using flying probe tester manufacturer
Positive plate and correction program are corrected by operator, and the microneedle needle point accuracy correction is small correction, uses flying probe tester
The defects of manufacturer provides correcting plate, does needle point correction, the correction time of the big correction is about to the microneedle after replacing successively
20 minutes, the correction time of the small correction was about 5 minutes.
Further, there are multiple mini-pads in every sheet in mini-pads contraposition design procedure in above-mentioned 4th step
During region, the summit of preferred plate angle corresponding unit mini-pads aligns as loci；Found in test process because of plank, phenanthrene
When the harmomegathus such as woods, drilling cause the off normal vacation to open, by each shipment unit separately test file processed, and according in above-mentioned 4th step
Mini-pads contraposition design carries out separating contraposition.Conventional flying probe tester is the cornerwise hole of selection plate angle or pad as data
The loci of figure and plate in kind, to facilitate employee to operate, but because conventional contraposition pad is more much greater than mini-pads, production
It is bigger than mini-pads that mesopore or pad by harmomegathus are influenceed nature, so as to cause plate in kind with test data alignment precision
Drop.In order to ensure the absolute alignment precision of mini-pads, mini-pads product selects the scheme in the 4th step of the invention, selected micro-
As loci, the method directly aligned using mini-pads center is aligned type pad, reduces harmomegathus and etching to contraposition essence
The influence of degree, the aligning accuracy of plate in kind and data coordinate can be effectively improved rapidly.
The foregoing is only a preferred embodiment of the present invention, not makees any formal limitation to the present invention；It is all
The those of ordinary skill of the industry can swimmingly implement the present invention by described above；But all it is familiar with this professional technology
Personnel without departing from the scope of the present invention, a little change for being made using disclosed above technology contents,
Modification and the equivalent variations developed, it is the equivalent embodiment of the present invention；Meanwhile all substantial technologicals according to the present invention are to the above
Variation, modification and evolution of any equivalent variations that embodiment is made etc., still fall within the protection model of technical scheme
Within enclosing.
Claims (10)
1. minimum widith, which is 1mil mini-pads, opens the quick determination method of circuit defect, it is characterised in that including following step
Suddenly：
The making of the first step, test file, plant a generation test file, then the shape according to pad automatically first with engineering software
Shape carries out local directed complete set to the test position of mini-pads in test file by hand and generates test file；
The selection of second step, test machine, high-precision flying probe tester of the selection with screw mandrel kinematic system, is detected with test board and flown
The CPK accuracy test values of pin test machine, the CPK accuracy tests value detected is contrasted with the CPK accuracy values being calculated,
Select optimal flying probe tester；
3rd step, change miniature testing tool and carry out accuracy correction, the conventional blade type testing needle on flying probe tester is changed
For microneedle, the microneedle is the special needle-like testing needle of mini-pads, after replacing, to after replacing microneedle carry out needle point with
The aligning accuracy of mini-pads center carries out accuracy correction；
4th step, mini-pads contraposition design, select mini-pads directly to be aligned using mini-pads center as loci
Method aligns；
5th step, test machine operational factor are set, and test machine operational factor is configured, and adjust displacement accuracy, make it is front-seat or
It will not be collided in test process between 2 microneedles of heel row.
2. minimum widith according to claim 1, which is 1mil mini-pads, opens the quick determination method of circuit defect, its
It is characterised by：The making of test file, is comprised the following steps that in the above-mentioned first step：
Test file is made according to flying needle machine parameter request, round or special-shaped pad test point design is in center, bar shaped weldering
Disk is staggered at both ends, and the width of mini-pads test file title and mini-pads is indicated on traveler.
3. minimum widith according to claim 1, which is 1mil mini-pads, opens the quick determination method of circuit defect, its
It is characterised by：After above-mentioned second step selection flying probe tester, the is carried out to the ball screw accuracy of flying probe tester using system software
Secondary correction.
4. minimum widith according to claim 3, which is 1mil mini-pads, opens the quick determination method of circuit defect, its
It is characterised by：The special needle-like testing needle of mini-pads is tapered aciculiform shape in above-mentioned 3rd step, including syringe needle and needle stand, the pin
Head and needle stand is by injection molding and to be fixed on needle stand end be in integrative-structure, the syringe needle afterbody passes through welding metal line
Mode is connected to form path with the signal conductor of flying probe tester test circuit, and the molded portion of the needle stand, which is provided with, to be used to incite somebody to action
Needle stand is arranged on the fixing hole on flying probe tester, and testing needle is arranged on flying probe tester by the needle stand by fixing hole.
5. the mini-pads that the minimum widith according to any one of Claims 1-4 claim is 1mil open circuit defect
Quick determination method, it is characterised in that：The extension elongation that the syringe needle stretches out hub portion is 3mm.
6. minimum widith according to claim 5, which is 1mil mini-pads, opens the quick determination method of circuit defect, its
It is characterised by：The tip diameter of the syringe needle is less than 2mil.
7. minimum widith according to claim 6, which is 1mil mini-pads, opens the quick determination method of circuit defect, its
It is characterised by：Accuracy correction includes the screw mandrel XY axial displacement accuracy corrections of flying probe tester, and microneedle pin in above-mentioned 3rd step
Sharp accuracy correction, the screw mandrel XY axial displacements accuracy correction is big correction, the accuracy correction provided using flying probe tester manufacturer
Plate and correction program are corrected by operator, and the microneedle needle point accuracy correction is small correction, uses flying probe tester factory
The defects of business provides correcting plate, does needle point correction to the microneedle after replacing successively.
8. minimum widith according to claim 7, which is 1mil mini-pads, opens the quick determination method of circuit defect, its
It is characterised by：The correction time of the big correction is about 20 minutes, and the correction time of the small correction is about 5 minutes.
9. minimum widith according to claim 8, which is 1mil mini-pads, opens the quick determination method of circuit defect, its
It is characterised by：It is preferred when every sheet has multiple mini-pads regions in above-mentioned 4th step in mini-pads contraposition design procedure
The summit of the miniature position pad of plate angle corresponding unit aligns as loci；Found in test process because plank, the film, drilling etc. are risen
When contracting causes the off normal vacation to open, by each shipment unit separately test file processed, and according to the mini-pads pair in above-mentioned 4th step
Position design carries out separating contraposition.
10. minimum widith according to claim 1, which is 1mil mini-pads, opens the quick determination method of circuit defect, its
It is characterised by：To the design of detection translational speed during test machine operational factor is set in above-mentioned 5th step, when mini-pads width
During more than or equal to 3mil, middling speed is selected；When mini-pads width is less than 3mil, low speed is selected.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710367000.9A CN107356857B (en) | 2017-05-23 | 2017-05-23 | Width is the rapid detection method of the PCB mini-pads functional defect of 1mil-4mil |
| PCT/CN2017/106652 WO2018214393A1 (en) | 2017-05-23 | 2017-10-18 | Fast detection method for functional defect of pcb micro pad having minimum width of 1 millimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710367000.9A CN107356857B (en) | 2017-05-23 | 2017-05-23 | Width is the rapid detection method of the PCB mini-pads functional defect of 1mil-4mil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107356857A true CN107356857A (en) | 2017-11-17 |
| CN107356857B CN107356857B (en) | 2019-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710367000.9A Active CN107356857B (en) | 2017-05-23 | 2017-05-23 | Width is the rapid detection method of the PCB mini-pads functional defect of 1mil-4mil |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107356857B (en) |
| WO (1) | WO2018214393A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108834330A (en) * | 2018-06-29 | 2018-11-16 | 惠州市金百泽电路科技有限公司 | A kind of processing method of PCB " D " font abnormal shape pad |
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| CN115272349A (en) * | 2022-09-30 | 2022-11-01 | 江苏宝翼通讯科技有限公司 | Method for detecting welding defects of computer PCB main board |
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| CN107356857B (en) | 2019-11-15 |
| WO2018214393A1 (en) | 2018-11-29 |
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